Slack gets notified when new Notion data sources are created
Data sources in Notion are how you add new databases and content types. When you create them, your team should know immediately. This automation posts to Slack announcing the new data source, so your team understands the new capacity available to them.
Trigger
Data Source Created
Triggers when a new Notion data source is created. Fires workspace-wide. The payload's `data.parent` carries the data source's tree parent (typically the teamspace) for downstream filtering. A single template-based database creation can fire multiple `data_source.created` events at once — one per data source the template instantiates.
Action
Post message to channel
Deprecated: posts a message to a slack channel, direct message, or private channel. use `send message` instead.
Why this helps
Neurodivergent founders make structural changes to their Notion workspace without thinking through team communication. Team members discover new databases by accident or feel left out of organizational decisions.
- Team members learn about new databases immediately instead of discovering them weeks later
- Reduces confusion when team members encounter unfamiliar database structures
- Creates transparency about workspace organization and changes
- Encourages team input on how new data sources should be organized
Setup
Build it in a few focused steps.
- 1Connect your Notion workspace and Slack account to Notis.
- 2Create an automation with the prompt: 'When a new data source is created in my Notion workspace, post to the infrastructure channel announcing the new database and what it's for.'
- 3Select 'Data Source Created' as your trigger.
- 4Specify the Slack channel for receiving data source announcements.
- 5Test by creating a new Notion data source and confirming the announcement appears in Slack.
Questions about this workflow
What's the difference between a data source and a database?
A data source is Notion's internal data container (created with their new API post-September 2025). Databases are the visible tables. When you add a new data source, a corresponding database appears.
Will this post for every data source, or just the important ones?
By default, yes. You can adjust your prompt to post only for data sources with specific names or tagged with 'team-shared'.
Can I include the data source schema in the Slack post?
Yes. Ask Notis to include 'what properties this data source has' or 'what type of content it will contain' in the post.
When this happens · Trigger
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Supported Triggers and Actions
Notis builds workflows that link Notion to Slack. A trigger fires from one place; an action lands in another.
Notion triggers
Slack actions
All Page Events
Triggers when any Notion page is created or updated across the workspace.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Comment Created
Triggers when a new comment is created in Notion. Optional `page_id` filter scopes to comments on a specific page. When omitted, fires for any new comment in the workspace the integration has access to. Requires the 'Read comments' capability on the Notion integration. If a connection was authorized before that capability was enabled, the user must re-authorize the connection for comment events to flow.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
New Comment
Triggers when a new comment is added to a specified Notion block or page.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Database Created
Triggers when a new Notion database (the container) is created. A database is the post-2025-09-03 container that holds one or more data sources. This trigger fires for the container's creation event (`database.created`), distinct from `NOTION_DATASOURCE_CREATED` which fires when a new data source is added to an existing database. Most customers calling Notion's `POST /v1/databases` (the legacy API) or creating a database via the Notion UI will see this event. Adding a new data source to an existing database fires `data_source.created` instead — use `NOTION_DATASOURCE_CREATED` for that. Notion's payload puts `entity.type: "block"` (the container is a `child_database` block in the content tree) and `entity.id` is the database id.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Data Source Created
Triggers when a new Notion data source is created. Fires workspace-wide. The payload's `data.parent` carries the data source's tree parent (typically the teamspace) for downstream filtering. A single template-based database creation can fire multiple `data_source.created` events at once — one per data source the template instantiates.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Data Source Schema Updated
Triggers when a Notion data source's schema is updated. Fires on column add / remove / rename. Payload includes `data.updated_properties: [{id, name, action}]` so consumers can discriminate the kind of change downstream. Optional `data_source_id` filter scopes to schema changes on a single data source. When omitted, fires for any schema change in the workspace the integration has access to. Note: adding a column also fires `page.properties_updated` once per existing row in the data source. Customers wanting a single structural-change signal should use this trigger.
Add call participants
Registers new participants added to a slack call.
New Page
Triggers when a new page is added to a Notion database.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Page Added to Page
Fires when a new subpage (a `child_page` type block) is added under a specified parent Notion page.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
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